youtube.com/watch?v=bVKVB0MImOg After an Intro, Ferde Grofe's 'Grand Canyon Suite', Donkey Theme, starts with a picturesque depiction of pack mules on the trail for the first 8 measures. The second 8 measures of a descending, frenetic theme, don't make programmatic sense, unless there is an explicit visual depiction of a donkey tumbling off the trail. In the third 8 measure section, the donkey's plaintive hee-haw is heard.